Tube ironing and gripping device



Aprll 19, 1927. R01. I

TUBE IRONING A ND GRI PP'ING DEVICE Filed Apri 28,,- 1926 3 Sheets-Sheet 3 INVENTOR & WQ W 1i; ATTO RNEY Patented Apr. 19, 1927.

ROBERT J. JAUCH, OF FORT-WAYNE, INDIANA.

TUBE IRONING AND GRIPPING DEVICE.

Application filed April 28, 1926. Serial No. 105,130.

holding the paper tube during the retraction of the mandrel. The gripping means set 7 forth in the present application constitute an improvement over that shown in the original application.

The principal object. of my invention is to grip the tube formed on the mandrel so as to hold it in position while the mandrel is being retracted.

Another object of my invention is to permit the manufacture of paper tubes of any desired length.

Another object of my invention is to iron the tube on the mandrel as it is formed and while still damp and thus to ensure the formation of a tube conforming strictly to the shape of the mandrel, as, for instance, to

39 form a square tube on a square mandrel, or

a hexagonal tube -on a hexagonal mandrel,

the sides of which tube will be flat and its edges true.

Another object of my invention is to provide an ironing and gripping device capable of being readily adjusted to a plurality of sizes of mandrels and without disassembling the device. 7

Another object of my invention is to pro vide a gripping device adapted to co-act with mandrels of a large number of crosssectional shapes as, for instance, square, octagonal, rectangular parallelograms whose non-parallel sides are of unequal length, etc.; or. triangles, hexagons, etc.

In the particular embodiment of my invention selected for illustration Figure 1, is aside elevation of my ironing and gripping device adapted tobe used in connection with a square mandrel or one of other. rectangular shape in cross section;

Fig. 2, is a top plan view of the same:

Fig.3. is a longitudinal section on the line 3-3 of Fig. 1. with an equivalent length of square mandrel shown therein in full lines:

Fig. 4, is a cross section'on the line 44 of Fig. 1 with a square mandrel and tube shown in gripped position and with part of the supporting frame broken away;

Fig. 3, is an end View of the device;

[1 ig. (i, is a perspective of one of the tWO body members;

Fig. 7 is a side elevation of a tube winding machine equipped with the tube ironing and gripping device which is the subject of this application.

The invention disclosed in this application is used in conjunction with a tube Winding machine comprising a bed or table B to which are secured the various parts of the machine. Upon this table are disposed a pair of fixed bearings b in which is rotatably mounted a drive shaft 6 that is actuated by a motor M through the medium of a belt m and pulleys m and b.

A reciprocating driver is mounted on the table so as to be actuated by the drive shaft 6 and consists of a counter shaft 6' having thereon a worm wheel I) that is actuated by the worm b on the drive shaft 6 The counter shaft has fixed thereon a' mutilated gear 7) that is actuated alternately with a pair of spaced rack bars 5' b. The counter shaft 6 and the rack bars 6'' b have bearing supports respectively in a' standard 6 on the table. and the forward ends of said rack bars have rigidly fixed thereto a cross head 6 which has a forwardly extending rigid stem 6.

A rotary driver is mounted upon the table and consists of a sprocket wheel 6 mounted in a standard 6 and through the hub of which a square connecting 'rod 6 extends and has longitudinal sliding movement. The square connecting rod 6 is disposed in longitudinal alignment with the stem 6 on the reciprocating driver and is connected to said stem by a coupling b. having thereon any suitable bearing (not shown) .that,

oppositely disposedcones 5 b mounted upon a corresponding pair of shafts b" and b and upon which is trained an endless belt 6, there being a belt shifter b and an the longitudinal position of the belt and.

cones.

By adjustably turning the screw shaft I) the rotary driver will accordingly be oper-'- ated with more or less velocity relative to the movement of the reciprocating driver.

A squaremandrelb, removably secured to the shank I) by pin'b is mounted in a bearing 71 in which thmiandrel has longitudinal and rota movement. The shank b' of the mandre is round in cross section and extends loosely through the supporting bearing 6 in which it has longitudinal and rotary movement. y

The connecting rod b and the shank I)" have corresponding clutch membersb and b respectively fixed thereon so as to abut one another, the abutting faces of said memhere being toothed so that locking engagement between the clutch members is established when the clutch members are brought ing disengaging member mounted in the hollow post I).

A supporting frame F with bottom port1on f, and uprights f f", is adaptedto be secured to the bed B of the machine in any suitable manner as by winged bolt 6 thread ed in the bed. The bolt body is adapted to pass into the central vertical slot 7' in the iead end of the bottom member 7. extending back to f, and the winged through the opening f in t e upright f also at the head end of the frame.

The body of the device is composed of two similar longitudinal portions A, A counterbored at each end to receive a hub member designated as A at one end and A at the other; These hubs are preferably secured by a dowel a; entering the end of each body member A. A so that the whole body thus formed of the members A, A, A, A will. form a unit and rotate together on the cylindrical hub ends a a Obviously the whole body may be made of one casting.

The upright members f, f of the frame F are bored at f, f to formn bearing to,

ortion passes i, f next to the openings f, f are formed.

grooves if, f which co-achwith grooves a a in retamer rings a a and these with a Silltfibldlllllllbtil of balls a form a thrust. bearing for each end of the body. The axial openings a -in the body members A, A anda 1n the hubs A A are made large enouglrto accommodate the maximum slze mandrel intended for that particular gripacross the horizontal faces are designated as a, a", and the slots across the vertical faces as a As Fig. 6 shows only one of these "body members, the slots a appear only across the one vertical face shown.

A pair of bearing plates G, C are provided for each face of the body and secured thereto by cap screws 0 passing through cross slots 0 and threaded with the body so as to allow adjustment. of the bearing plates crosswise of the face. Equal adjustment of said bearing plates C, C from the longitudinal center line of the body face is secured by means of a right and left thread adjusting screw 0 threaded in brackets 0 0 secured to the members C, C respective ly, and positioned by means of a bracket a, secured to the body at said center line, which bracket a co-acts with a circumferential groove 0 in the screw 0 midway between its right hand thread and its left hand thread.

The bearing plates C, C are proyided with pairs of bearing slots 0, 0 respectively, in which rest the bearing portions 1' of the ironing and gripping rolls R. whose tube contacting surfaces 1' are straight knurled,

to prevent slippage of the tube past the rolls when the mandrel is being retracted.

Just outward of the bearing portions r are ratchet wheels 1 each adapted to contact with a pawl 0 and each pivoted by a screw 0 threaded in a bearing plate, and these pawls are held to contact with the ratchet wheels by coiled spring 0'. The. rolls R rotate freely when the mandrel is on its. progression stroke and are prevented from counter rotation when the mandrel is on its retraction stroke by the action of the pawls on t e ratchet wheels.

B. tween each end of each, roll R and the mn'tguous ratchet wheel 1* is a circumferpressure of the roll required thereon, and

this the springs 7 increasingly provide as the rolls are spread wider apart to accommodate larger tubes and mandrels. One

pairof rolls irons and grips two oppositev tube faces and the other pair irons and grips the other opposite tube faces. The 'llQlllllg should be progressive, that/is, the pressure exerted on the rolls at the'head end of the device should be the least and that of each succeeding pair greater. Suitable springs are selected to effect this result.

The corners formed by the edges of the bearing plates C, C and the bearing slots c are cut away sufficiently to permit the rolls tobe slipped into place endwise when the bearing plates are in position on the body. "These dog-cared corners are designated as 0 The bearing plates C, C have their outer edges o beveled underneath so as to afford maximum adjustment thereof outwardly.

- lVhen a paper tube has been formation the outer end of the mandrel by supplying thereto paper in strip form the head end of the ironing and gripping-device, that is the end at which 7" is, dr'el until the rolls R, which have been properly adjustedto the particular mandrel then being used, contact with the sides of the tube, and when in proper position the device is boltcd'securely to the bed of the tube-making machine; Itwill be under- .scope of said device.

stood that the position. of the ironing'and gri pingde'vice is such that some part of said mandrel is'always withinthe full roll The tube would be crushedanddeformed'if the rolls were allowed to. Beargupon a tube fIOIILI WhlClT the mandrel had withdrawn. 'E

During the progression stroke the mandrel'it is also rotating andflthe-rotation of the mandrel, grip d by the-rolls R which rotate freely in t at direction, rotates the I bodyof the ironingand gripping device and rogression parts fixed theretd-When the stroke has been completed and t e mandrel ceases rotating, the of the ironing and gripping device stops .rotating,

mandrel is retracted the rolls R, secured against counter rotation by the ratchet tube and hold .it securely in place while the mandrel is being withdrawn therefrom.

I do not wish to be limited to the precise a tube formed on Is pushed over said man-,

and as the form of the device herein illustrated and described, nor with the modification indicated,

but conceive as within the scope of my inven- States 1. In a device for ironing and gripping a tube formed on a mandrel, means for producing relative rcciprocation of said device and mandrel, aplurality of rolls with roughened surfaces mounted in said device and adapted to ride on different surfaces of said tube while it is in position on said mandrel, means for permitting said rolls to 1'0- tate freely by contact with the tube surfaces, and means for preventing their counter-rotation on the tube stripping stroke.

2.111 a device for ironing and gripping a mandrel, means for producing relative reciprocation of said device and mandrel, means for rotating one of them, a plurality of rolls with roughened surfaces mounted in said device and adapted to ride on different surfaces of said tube while it is in position on said mandrel, means for permitting said rolls to rotate freely by contact withthe tube surface on the tubeforming stroke, and means for preventing their counter-rotation on the tube-stripping stroke.

3. In a device for ironing and gripping paper tubes formed on a mandrel of a paper tube-making machine, means for axiallyreciprocating one of said co-acting devices, means for rotating one of ,said knurled rolls in said ironing and gripping device adapted toride 011 different faces of said tube while it is in position on'said mandrel, means for permitting saidrolls to ro tate freely by contact with the tube surfaces on the tube-forming stroke, and means for preventing their turningin the opposite direction on the tube-stripping stroke.

4. An ironing-and gripping ed to co'-act with the mandrel of a paper tube-making machine, comprising a supporting frame, a rotatable body journalled in said frame, said body havin an axial opening through which said mandrel extends, and ironing mea-ns supported by said body extending across the axial opening thereof said ironing means free to rotate in one direction only and means for preventing-the counter rotation of said ironing means. i

5. In an ironing and gripping device adapted to co-act with a mandrel having an even number of sides, said 'mandrel being part of a paper tube-making machine, which mandrel recip'rocates and rotates during its' frame, a body-rot-atably journalled in said.

supporting frame, an axial opening through devices,

said body throu hfiwhieh said mandrel extends', rolls witi roughened surfaces arranged in pairs and a'da ted to rotate on the sides of a tube forms on said mandrel, means for permitting said rolls to be rotated by frictional contact with the sides of said tube on the progression stroke of said mandrel, and means for preventing the counter-rotation of said rolls on the retraction stroke of said mandrel so as to prevent the retraction of said tube with the mandrel.

6. In an ironing and gripping device adapted to be used in combination with the mandrel of a paper tube-making machine which mandrel reciproeates and rotates during its regression stroke but does not rotate during its retraction stroke; a supporting frame, a body rotatably joui'nalled in said supporting" frame, an axial opening through said body through which said mandrel extends, rolls with roughened surfaces arranged in groups and adapted to rotate on the sides of a tube formed on said mandrel, means for permitting said rolls to be rotated by frictional contact with the sides of said tube on the progreszion stroke of said mandrel, and means for preventing the counter-rotation of said rolls on the retraction stroke of said mandrel so as to prevent the retraction of said tube with the mandrel.

7 In ironing and gripping devices to be used with a paper tube-making machine having a longitudinally reciprocating mandrel with rotary movement during its protrusion stroke, a rotatable and longitudinally immovable body member having an axial opening through which said mandrel and tube thereon extend, and means in supported relation with said body member extending into the o ening thereof and engaging said tube operable to stop said tube from retracting with said mandrel during the retracting stroke.

8. In an ironing and gripping device in combination with a longitudinally reciprocable'and rotatable mandrel operable for the formation thereon of a paper tube, a rotatable and longitudinally immovable body member having an axial opening through which said mandrel and paper tube thereon extend; a series of spring pressed rolls, said rolls being supported in said member and extending transversely in different planes into the opening thereof and bearing upon said paper tube, said rolls being rotatable upon said tube during the forward stroke of said mandrel, and a ratchet mechanism in connection with said rolls operable to prevent counter-rotation of said rolls during the retracting stroke of said mandrel.

9. 1:1 an ironing and gripping device in combination with a reciprocating mandrel, a body member, having an opening extending therethrough and through wh ch sald mandrel extends; and a mechanism includmg rolls rotatable in due direction only, each roll extending transversely into the opening of said body member and bearing upon said paper tube and being operable to roll upon said tube during the forward stroke of the mandrel to iron said tube and to detain the tube'from retracting with the mandrel during the opposite stroke thereof.

10. In an ironing and ripping device in combination with a mant rel having longitudinal reciprocating movement and also retary movement during one of its longitudinal strokes operable for the fo mation thereon of a tube from continuous paper strips, a rotatably mounted body having an axial opening through which said mandrel extends; and a roll mechanism supported by said body having rolls rotatable in one direction only that bear upon said paper tube and roll thereon during the forward rotat ing stroke of the mandrel and detain said tube from retraction with the mandrel during the opposite stroke thereof.

11. An ironing and gri ping device for a paper tubeanaking mac line including a mandrel having longitudinal reciprocating movement and also rotary movement during one of its longitudinal strokes for the formation thereon of a paper tube, a rotatably mounted body having an axial opening through which said mandrel extends; rolls supported in said body disposed in successive pairs between which rolls said mandrel extends; springs operable to hold said rolls in bearing contact with said paper tube on the mandrel, those portions of said rolls contacting with said tube being roughened; and a ratchet and pawl mechanism operable in connection with said rolls arranged so as to rmit turning of the rolls during the comblned rotary and longitudinal stroke of the mandrel and to prevent rotation of. the rolls during the retracting stroke of the mandrel whereby said paper tube is ironed on the mandrel by said rolls during its passage therebetween and the tube held so that the mandrel will retract and strip the tube from it.

12. An ironing and gripping device for a paper tube-making machine including a mandrel having axial reciprocating movement and rotary movement during its protrusion stroke for the formation of a paper tube thereon; said ironing and gripping device having in combination, a supporting frame adapted to be secured to the bed of said machine, a rotatable body journalled in said frame, said body having an axial opening through which said mandrel extends, bearing plates supported by said body, a plurality of rolls extending across said axial opening and adapted to bear on different sides of said tube, said bearin surfaces of the rolls having longitudinally nurled slots in said bearing plates in which said rolls are rotatably mounted, springs adapted to during the retraction stroke of the mandrel hold said rolls in contact with said tube on to cause the rolls to grip the tube and 10 the mandrel to iron it thereon during the hold it so that retraction of the mandrel will progression stroke of the mandrel, a ratchet stop the tube and permit it to be stripped and pawl mechanism for said rolls adapted therefrom.

to permit free turning of said rolls during In testimony whereof I have hereunto set the progression stroke of said mandrel and my hand. 1

to prevent the counter-rotation of the rolls ROBERT J. JAUCH. 

